// 程序清单11.19 P416
// stonewt1.h -- revised definitionfor the Stonewt class
#ifndef STONEWT1_H_
#define STONEWT1_H_
class Stonewt
{
private:
    enum
    {
        Lbs_per_stn = 14
    };               // pounds per stone
    int stone;       // whole stones
    double pds_left; // fractional pounds
    double pounds;   // entire weight in pounds

public:
    Stonewt(double lbs);          // construct from double pounds
    Stonewt(int stn, double lbs); // construct from stone,lbs
    Stonewt();                    // default constructor
    ~Stonewt();
    void show_lbs() const; // show weight in pounds format
    void show_stn() const; // show weight in stone format
    // conversion functions
    operator int() const;
    operator double() const;
};

#endif